[Spice-devel] [spice-gtk PATCH v9 3/4] audio: spice-gstaudio implements async volume-info
Victor Toso
victortoso at redhat.com
Mon Apr 20 02:56:17 PDT 2015
Gstaudio rely on sink/src elements to get the volume/mute.
(e.g. pulsesink and pulsesrc, the values are updated by PulseAudio
itself when requested)
---
gtk/spice-gstaudio.c | 191 ++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 190 insertions(+), 1 deletion(-)
diff --git a/gtk/spice-gstaudio.c b/gtk/spice-gstaudio.c
index 892028c..2efe07e 100644
--- a/gtk/spice-gstaudio.c
+++ b/gtk/spice-gstaudio.c
@@ -50,6 +50,16 @@ struct _SpiceGstaudioPrivate {
static gboolean connect_channel(SpiceAudio *audio, SpiceChannel *channel);
static void channel_weak_notified(gpointer data, GObject *where_the_object_was);
+static void spice_gstaudio_get_playback_volume_info_async(SpiceAudio *audio,
+ GCancellable *cancellable, SpiceMainChannel *main_channel,
+ GAsyncReadyCallback callback, gpointer user_data);
+static gboolean spice_gstaudio_get_playback_volume_info_finish(SpiceAudio *audio,
+ GAsyncResult *res, gboolean *mute, guint8 *nchannels, guint16 **volume, GError **error);
+static void spice_gstaudio_get_record_volume_info_async(SpiceAudio *audio,
+ GCancellable *cancellable, SpiceMainChannel *main_channel,
+ GAsyncReadyCallback callback, gpointer user_data);
+static gboolean spice_gstaudio_get_record_volume_info_finish(SpiceAudio *audio,
+ GAsyncResult *res, gboolean *mute, guint8 *nchannels, guint16 **volume, GError **error);
static void spice_gstaudio_finalize(GObject *obj)
{
@@ -108,6 +118,10 @@ static void spice_gstaudio_class_init(SpiceGstaudioClass *klass)
SpiceAudioClass *audio_class = SPICE_AUDIO_CLASS(klass);
audio_class->connect_channel = connect_channel;
+ audio_class->get_playback_volume_info_async = spice_gstaudio_get_playback_volume_info_async;
+ audio_class->get_playback_volume_info_finish = spice_gstaudio_get_playback_volume_info_finish;
+ audio_class->get_record_volume_info_async = spice_gstaudio_get_record_volume_info_async;
+ audio_class->get_record_volume_info_finish = spice_gstaudio_get_record_volume_info_finish;
gobject_class->finalize = spice_gstaudio_finalize;
gobject_class->dispose = spice_gstaudio_dispose;
@@ -370,6 +384,7 @@ static void playback_volume_changed(GObject *object, GParamSpec *pspec, gpointer
g_return_if_fail(nchannels > 0);
vol = 1.0 * volume[0] / VOLUME_NORMAL;
+ SPICE_DEBUG("playback volume changed to %u (%0.2f)", volume[0], 100*vol);
if (GST_IS_BIN(p->playback.sink))
e = gst_bin_get_by_interface(GST_BIN(p->playback.sink), GST_TYPE_STREAM_VOLUME);
@@ -395,7 +410,7 @@ static void playback_mute_changed(GObject *object, GParamSpec *pspec, gpointer d
return;
g_object_get(object, "mute", &mute, NULL);
- SPICE_DEBUG("playback mute changed %u", mute);
+ SPICE_DEBUG("playback mute changed to %u", mute);
if (GST_IS_BIN(p->playback.sink))
e = gst_bin_get_by_interface(GST_BIN(p->playback.sink), GST_TYPE_STREAM_VOLUME);
@@ -428,6 +443,7 @@ static void record_volume_changed(GObject *object, GParamSpec *pspec, gpointer d
g_return_if_fail(nchannels > 0);
vol = 1.0 * volume[0] / VOLUME_NORMAL;
+ SPICE_DEBUG("record volume changed to %u (%0.2f)", volume[0], 100*vol);
/* TODO directsoundsrc doesn't support IDirectSoundBuffer_SetVolume */
/* TODO pulsesrc doesn't support volume property, it's all coming! */
@@ -456,6 +472,7 @@ static void record_mute_changed(GObject *object, GParamSpec *pspec, gpointer dat
return;
g_object_get(object, "mute", &mute, NULL);
+ SPICE_DEBUG("record mute changed to %u", mute);
if (GST_IS_BIN(p->record.src))
e = gst_bin_get_by_interface(GST_BIN(p->record.src), GST_TYPE_STREAM_VOLUME);
@@ -543,3 +560,175 @@ SpiceGstaudio *spice_gstaudio_new(SpiceSession *session, GMainContext *context,
return gstaudio;
}
+
+static void spice_gstaudio_get_playback_volume_info_async(SpiceAudio *audio,
+ GCancellable *cancellable,
+ SpiceMainChannel *main_channel,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GSimpleAsyncResult *simple;
+
+ simple = g_simple_async_result_new(G_OBJECT(audio),
+ callback,
+ user_data,
+ spice_gstaudio_get_playback_volume_info_async);
+ g_simple_async_result_set_check_cancellable (simple, cancellable);
+
+ g_simple_async_result_set_op_res_gboolean(simple, TRUE);
+ g_simple_async_result_complete_in_idle(simple);
+}
+
+static gboolean spice_gstaudio_get_playback_volume_info_finish(SpiceAudio *audio,
+ GAsyncResult *res,
+ gboolean *mute,
+ guint8 *nchannels,
+ guint16 **volume,
+ GError **error)
+{
+ SpiceGstaudioPrivate *p = SPICE_GSTAUDIO(audio)->priv;
+ GstElement *e;
+ gboolean lmute;
+ gdouble vol;
+ gboolean fake_channel = FALSE;
+ GSimpleAsyncResult *simple = (GSimpleAsyncResult *) res;
+
+ g_return_val_if_fail(g_simple_async_result_is_valid(res,
+ G_OBJECT(audio), spice_gstaudio_get_playback_volume_info_async), FALSE);
+
+ if (g_simple_async_result_propagate_error(simple, error)) {
+ return FALSE;
+ }
+
+ if (p->playback.sink == NULL || p->playback.channels == 0) {
+ SPICE_DEBUG("PlaybackChannel not created yet, force start");
+ /* In order to get system volume, we start the pipeline */
+ playback_start(NULL, SPICE_AUDIO_FMT_S16, 2, 48000, audio);
+ fake_channel = TRUE;
+ }
+
+ if (GST_IS_BIN(p->playback.sink))
+ e = gst_bin_get_by_interface(GST_BIN(p->playback.sink), GST_TYPE_STREAM_VOLUME);
+ else
+ e = g_object_ref(p->playback.sink);
+
+ if (GST_IS_STREAM_VOLUME(e)) {
+ vol = gst_stream_volume_get_volume(GST_STREAM_VOLUME(e), GST_STREAM_VOLUME_FORMAT_CUBIC);
+ lmute = gst_stream_volume_get_mute(GST_STREAM_VOLUME(e));
+ } else {
+ g_object_get(e,
+ "volume", &vol,
+ "mute", &lmute, NULL);
+ }
+ g_object_unref(e);
+
+ if (fake_channel) {
+ SPICE_DEBUG("Stop faked PlaybackChannel");
+ playback_stop(NULL, audio);
+ }
+
+ if (mute != NULL) {
+ *mute = lmute;
+ }
+
+ if (nchannels != NULL) {
+ *nchannels = p->playback.channels;
+ }
+
+ if (volume != NULL) {
+ gint i;
+ *volume = g_new(guint16, p->playback.channels);
+ for (i = 0; i < p->playback.channels; i++) {
+ (*volume)[i] = (guint16) (vol * VOLUME_NORMAL);
+ SPICE_DEBUG("(playback) volume at %d is %u (%0.2f%%)", i, (*volume)[i], 100*vol);
+ }
+ }
+
+ return g_simple_async_result_get_op_res_gboolean(simple);
+}
+
+static void spice_gstaudio_get_record_volume_info_async(SpiceAudio *audio,
+ GCancellable *cancellable,
+ SpiceMainChannel *main_channel,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GSimpleAsyncResult *simple;
+
+ simple = g_simple_async_result_new(G_OBJECT(audio),
+ callback,
+ user_data,
+ spice_gstaudio_get_record_volume_info_async);
+ g_simple_async_result_set_check_cancellable (simple, cancellable);
+
+ g_simple_async_result_set_op_res_gboolean(simple, TRUE);
+ g_simple_async_result_complete_in_idle(simple);
+}
+
+static gboolean spice_gstaudio_get_record_volume_info_finish(SpiceAudio *audio,
+ GAsyncResult *res,
+ gboolean *mute,
+ guint8 *nchannels,
+ guint16 **volume,
+ GError **error)
+{
+ SpiceGstaudioPrivate *p = SPICE_GSTAUDIO(audio)->priv;
+ GstElement *e;
+ gboolean lmute;
+ gdouble vol;
+ gboolean fake_channel = FALSE;
+ GSimpleAsyncResult *simple = (GSimpleAsyncResult *) res;
+
+ g_return_val_if_fail(g_simple_async_result_is_valid(res,
+ G_OBJECT(audio), spice_gstaudio_get_record_volume_info_async), FALSE);
+
+ if (g_simple_async_result_propagate_error(simple, error)) {
+ return FALSE;
+ }
+
+ if (p->record.src == NULL || p->record.channels == 0) {
+ SPICE_DEBUG("RecordChannel not created yet, force start");
+ /* In order to get system volume, we start the pipeline */
+ record_start(NULL, SPICE_AUDIO_FMT_S16, 2, 48000, audio);
+ fake_channel = TRUE;
+ }
+
+ if (GST_IS_BIN(p->record.src))
+ e = gst_bin_get_by_interface(GST_BIN(p->record.src), GST_TYPE_STREAM_VOLUME);
+ else
+ e = g_object_ref(p->record.src);
+
+ if (GST_IS_STREAM_VOLUME(e)) {
+ vol = gst_stream_volume_get_volume(GST_STREAM_VOLUME(e), GST_STREAM_VOLUME_FORMAT_CUBIC);
+ lmute = gst_stream_volume_get_mute(GST_STREAM_VOLUME(e));
+ } else {
+ g_object_get(e,
+ "volume", &vol,
+ "mute", &lmute, NULL);
+ }
+ g_object_unref(e);
+
+ if (fake_channel) {
+ SPICE_DEBUG("Stop faked RecordChannel");
+ record_stop(SPICE_GSTAUDIO(audio));
+ }
+
+ if (mute != NULL) {
+ *mute = lmute;
+ }
+
+ if (nchannels != NULL) {
+ *nchannels = p->record.channels;
+ }
+
+ if (volume != NULL) {
+ gint i;
+ *volume = g_new(guint16, p->record.channels);
+ for (i = 0; i < p->record.channels; i++) {
+ (*volume)[i] = (guint16) (vol * VOLUME_NORMAL);
+ SPICE_DEBUG("(record) volume at %d is %u (%0.2f%%)", i, (*volume)[i], 100*vol);
+ }
+ }
+
+ return g_simple_async_result_get_op_res_gboolean(simple);
+}
--
2.1.0
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